National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mid Valley Airport (KTXW)

Lat: 26.18°NLon: 97.97°WElev: 70ft.

Fair

84°F

29°C

Humidity 74%
Wind Speed E 7 mph
Barometer 29.95 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 31 Aug 10:55 pm CDT
Extended Forecast for

Mercedes TX

  • Tonight

    Tonight: Mostly clear, with a low around 77. Southeast wind 3 to 7 mph.

    Low: 77 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 98 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 77. East northeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 77 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 96. North wind 3 to 8 mph. Chance of precipitation is 70%.

    High: 96 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. East northeast wind 5 to 9 mph becoming light and variable in the evening.

    Low: 76 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 98. Light and variable wind becoming east northeast 5 to 9 mph in the morning.

    High: 98 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. East wind 5 to 10 mph becoming light and variable after midnight.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 99. Light and variable wind becoming east 5 to 9 mph in the afternoon.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 77. Southeast wind 3 to 7 mph.
Labor Day
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 2am. Mostly clear, with a low around 77. East northeast wind 5 to 10 mph becoming light and variable after midnight.
Tuesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Increasing clouds, with a high near 96. North wind 3 to 8 mph. Chance of precipitation is 70%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. East northeast wind 5 to 9 mph becoming light and variable in the evening.
Wednesday
Sunny, with a high near 98. Light and variable wind becoming east northeast 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 75. East wind 5 to 10 mph becoming light and variable after midnight.
Thursday
Sunny, with a high near 99. Light and variable wind becoming east 5 to 9 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 74. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 98. Light southeast wind increasing to 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 77. Southeast wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
Saturday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
Showers and thunderstorms likely. Mostly sunny, with a high near 92. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Mercedes TX
 26.16°N 97.93°W
Last Update:
11:00 pm CDT Aug 31, 2025
Forecast Valid:
11pm CDT Aug 31, 2025-6pm CDT Sep 7, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation